OBJECT-SPECIFIC FUNCTION BLOCKS
OUTPUT OBJECTS
OSSD (safety outputs)
The OSSD outputs do not require any
maintenance. Output1 and Output2
supply 24 VDC with an input of "1"
(TRUE) and 0 VDC with an input of "0"
(FALSE).
Each OSSD pair has an input for
RESTART_FBK. This input must al-
ways be connected as described in
the paragraph RESTART_FBK.
Parameters
Manual Reset: If selected, a reset can be requested on every change in the input signal.
Otherwise the activation of the output will correspond directly to the input conditions.
There are two types of reset: "Manual" and "Monitored". On the selection of the manual
reset, the system only checks the signal transition from 0 to 1.
With the monitored reset the transi-
tion from 0 to 1 and then back to 0
is checked.
Enable Status: If selected, the OSSD
can be connected to a STATUS.
STATUS output
Using the STATUS output (not a safety output) every
point in the diagram can be monitored by connect-
ing it to the input. The output supplies 24 VDC with
an input "1" (TRUE) and 0 VDC with an input of "0"
(FALSE).
WARNING: The STATUS output is NOT a safety output.
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